How do i work out the shaded area??

help

Step-by-step explanation:

Remark

The method you would use is

Area of the rectangle

Area = L * W

L = 3 + 14 =  17

W = 6

Area = 6 * 17 =                                       102

Area of Left triangle

H = 6

B = 3

Area = 1/2 * B * H

Area = 1/2 * 3 * 6

Area =                                                    9

Area of the triangle on the right

H = 6

B = 17 - 7 = 10

Area = 1/2 * b * h

Area = 1/2 * 6 * 10 =                             30

Area of the two triangles =                39

Area of the green area = 102 - 39 = 63

-8

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."